Notifications

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Learn about the technical aspects of notification delivery on device, including notification types, priorities, and notification center management.

Notifications Documentation

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Apple 推送通知服务如何更新证书
“Apple 推送通知服务的服务器证书更新 2024 年 10 月 17 日 Apple 推送通知服务 (APNs) 的证书颁发机构 (CA) 即将改变。APNs 将于 2025 年 1 月 20 日更新沙盒环境的服务器证书,并于 2025 年 2 月 24 日更新生产环境的服务器证书。” 关于这个邮件,请问我应该怎么做,才能把下载的crt证书加到trust store上
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751
Dec ’24
Batch push issues for commercial apps
The backend service uses the same copy to push to many users in batches. This year, the following problem began to occur. Using http2 send is normal, but when getting the result through the stream id, it always times out. Restarting the service still times out. I hope Apple development engineers can help me find out what the problem is.
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244
Dec ’24
Push Notifications after update to 18+ iOS
Dear Apple Engineer, We have problem in the banking application after update iOS to 18, 18.1 or 18.1.1. No notifications appear on the locked screen, even in the notification center. On lower version push notifications apparently correctly. What have we checked so far is: certificates profiles app with push notifications extension and without it usage of setBadgeCount(_:withCompletionHandler:) instead of applicationIconBadgeNumber Our sample payload with encrypted data: { "aps":{ "alert":"Message from Bank", "badge":0, "sound":"default", "mutable-content":1, "category":"" }, "Type":"", "MessageId":"", "Id":"8ebf0c13-83cf-4029-ac13-91d026c3770a", "Media-url":"", "alternativeTitle":"New message", "priority":5, "EncryptedData":"eyJ0eXAiOiJibTplbmMtdjEiLCJhbGciOiJibTppb3MtZWNkaCIsImVuYyI6ImJtOkExMjhHQ00tSVYxNiIsImVuY19raWQiOiI5OUIyN0E4NC1CQzRFLTRGMzQtQjBGNC0yMTcyMEYxQTFEN0EifQ...BDdxycY-ZWPC7BgI_07efVSgjKyGyGVKlcNtZSslWJePrwJkJyIxFBr07XtayB0I2jv6Vc8AdUpdvMJ-daVzkPYMZ7pQA_X0Pg8RPRS2GnPkhyhK3XNkLRMsjG6CkSafYaqSeLMEpdF2Q-QkajvO3ojnRl1C-Bp9FpNbeaCwJXwqjEMKKhggRsKH8zdk7XcYhZX5_hARbBkIFLrCX1Xzyypp_PfZ23v9Pbd8aHmAf7FQdYN6xbfyoL5XEaDrCjGi-up2n1nlcTeEfkXHBunitUzQulmrjo86GJS0ldhF0mEMZ3_t6ObbjeKijYExMeYHxeCe89Yg10TvZI6kP4xizpJijG9cz75X3VI3I4SgeR8BuZRcb5eTQKWWzGW7u6LD1QtV3PWFCtv942CSz62kPPo-dD0248Fqm5HwxZejQSrZKjYQQ87dkzB0q7p2Q_M0z2Y-bRfNRXJl8VaF5X6-2KwLq47zwrQYUIcEHdag3J05X0SzBiImAdbh2zQz074QqEEpoU1F6C89LHKFxAw", "IsSigned":false } What do you need to analyze the problem? Identifiers, sample application? Best regards, Michał iOS Developer.
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472
Dec ’24
iOS 18.2 Heavy Delays in Notifications with AI enabled
I am experiencing heavy delays with any push notification if I have AI enabled. Authenticator takes minutes to show up, the app for the doorbell that, needless to say, requires a real-time notification, fails to deliver push notifications in time. I have had to turn off AI in order to have a functioning phone... (I'm on a 16 Pro) Any resolution on this? Thanks
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840
Dec ’24
Push Notification Gets Removed From Notification Screen When Setting "badge" to 0
Push message on the lock-screen disappears in one specific instance. In general the situation is as follows: the application, upon starting up, sets the badge counter (i.e. notificationCenter.setBadgeCount(3)) the application is being sent to background the screen is locked (it doesn't matter if it's turned on or not) send a push message to the application and set the badge (in aps) to "0" What happens: the screen lights up (unless it's lit up already), the push is being displayed for a very short time and gets hidden. Happens on iOS 18.1, 18.1.1, 18.2. If not setting badge in the aps keys it works correctly. I've created a feedback report https://feedbackassistant.apple.com/feedback/16095572. I am able to reproduce the issue on a sample app 100% of the time :/
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548
Dec ’24
APNs Certificate Update
We are preparing to address the upcoming change to the Certification Authority (CA) for the Apple Push Notification service (APNs). We have a few questions regarding the necessary measures. Is the change of the Certificate Authority (CA) related to APNs something that needs to be handled on the server that sends push messages? In relation to the CA change, do we need to reissue the APNs certificate? If we handle the CA change on the server side and the new CA certificate already exists there, is there no need to make any further changes? If the server’s trust store already includes the new CA certificate, it seems that no additional changes are needed. Is it possible to verify right now that everything will function correctly?
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1.6k
Dec ’24
Silent push notifications not received
I have a flutter app which receives bot alert and silent notifications. The alert notifications are received properly whilst the silent ones do not trigger any function. My app is based on OneSignal but for the testing i am also trying to directly send the notifications using the APN console. Using either alert or background type notification I am using real device (iPhone XR) The background modes are set to "Background fetch" and "Remote notifications" The token is valid as i am getting alert notifications. The app has notification permissions. The didReceiveRemoteNotification never gets triggered (for alert or silent types) When sending alert notification i do see the printout of "willPresent notification" Here is my AppDelegate.swift code. @objc class AppDelegate: FlutterAppDelegate { override func application( _ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data ) { // Log device token to ensure correct registration let tokenParts = deviceToken.map { data in String(format: "%02.2hhx", data) } let token = tokenParts.joined() print("Device Token: \(token)") } override func application( _ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? ) -> Bool { // Request full notification permissions UNUserNotificationCenter.current().requestAuthorization( options: [.alert, .badge, .sound, .provisional, .criticalAlert] ) { (granted, error) in print("Notification Authorization Granted: \(granted)") if let error = error { print("Notification Authorization Error: \(error.localizedDescription)") } // Always attempt to register for remote notifications DispatchQueue.main.async { UIApplication.shared.registerForRemoteNotifications() } } // Set notification center delegate UNUserNotificationCenter.current().delegate = self GeneratedPluginRegistrant.register(with: self) return super.application(application, didFinishLaunchingWithOptions: launchOptions) } // Add this method to handle foreground notifications override func application( _ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void ) { print("🔔 FULL didReceiveRemoteNotification CALLED") print("Full Payload: \(userInfo)") // Detailed logging of APS dictionary if let aps = userInfo["aps"] as? [String: Any] { print("APS Dictionary: \(aps)") print("Content Available: \(aps["content-available"] ?? "Not Found")") } // Explicit silent notification check if let aps = userInfo["aps"] as? [String: Any], let contentAvailable = aps["content-available"] as? Int, contentAvailable == 1 { print("✅ CONFIRMED SILENT NOTIFICATION") // Perform any background task here completionHandler(.newData) return } print("❌ Not a silent notification") completionHandler(.noData) } override func application( _ application: UIApplication, performFetchWithCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void ) { print("🔄 Background Fetch Initiated") // Perform any background fetch tasks completionHandler(.newData) } override func userNotificationCenter( _ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void ) { let userInfo = notification.request.content.userInfo print("**** willPresent notification ****") print("Full Notification Payload: \(userInfo)") // Explicitly log the aps dictionary if let aps = userInfo["aps"] as? [String: Any] { print("APS Dictionary: \(aps)") print("Content Available: \(aps["content-available"] ?? "Not Found")") } // Check for silent notification if let aps = userInfo["aps"] as? [String: Any], let contentAvailable = aps["content-available"] as? Int, contentAvailable == 1 { print("**** CONFIRMED SILENT NOTIFICATION IN FOREGROUND ****") completionHandler([]) return } // For non-silent notifications if #available(iOS 14.0, *) { completionHandler([.banner, .sound]) } else { completionHandler([.alert, .sound]) } } }
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654
Dec ’24
VoIP call notification is randomly not delivered to a specific user
I'm facing an issue delivering VoIP push notifications to user devices. It's pretty random, sometimes notifications are delivered and sometimes not. I've had a call with the user to understand and narrow down the issue, including testing delivery of pushes to their device token via Push Notification Console as described here: https://developer.apple.com/documentation/usernotifications/testing-notifications-using-the-push-notification-console#4181180. I asked a user to use Wi-Fi first and tried delivering around 10 pushes via console and 2 of them were lost while the rest was delivered. I asked a user to use cellular and tried delivering also around 10 pushes and most of them were lost and only few of them were delivered. Production environment was used to deliver pushes hence I cannot see delivery log and so I have no visibility over a reason why push wasn't delivered. I wanted to file a code-level support ticket to get help however I need to supply a sample xcode project which in this particular case doesn't make any sense as I'm using Apple's Push Notification Console tool and it delivers pushes in some cases while doesn't deliver it in other cases. I'm pretty familiar with all potential reasons why push might not be shown on device, including app early crashes, not reporting a call to CallKit etc. => although you never know, I'm pretty sure it's not our case. How can I get support on investigating specific user device token delivery issues like in the case I described above? I have device token and push console records but it's not clear how to get support on that. Thank you!
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386
Dec ’24
Live Activity update push token
For devices running iOS 18 and iPadOS 18 or later, you can add input-push-token: 1 to your payload to start a Live Activity and receive a new push token. After you receive a new push token, you can use it to send updates to a Live Activity. I read from https://developer.apple.com/documentation/ActivityKit/starting-and-updating-live-activities-with-activitykit-push-notifications#Start-new-Live-Activities-with-ActivityKit-push-notifications that I can start a live activity from CUSTOM SERVER by the start token I get from MyApp.Does that paragraph means my CUSTOM SERVER can receive a new token from aps? If not, how can update the live activity started by Push-Notification when MyApp doesn't alive? And what "input-push-token: 1 " can do, when I put it in the payloads?
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996
Dec ’24
How can I keep my app up to date with the server without throttling
I am trying to build a chat app. I am using FCM to deliver messages to my app accompanied by some custom data like the new message_data, deleted message_id and so on; each message will need to run the app in the background to do some background processing and local database syncing. This continuous background processing is clearly not acceptable as APNs imposes a per-device limit on background push notifications . I am asking how can I push messages and actions payload without being throttled ?
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417
Dec ’24
Devices sometimes do not fetch updated Wallet passes
Hello, I'm using Apple Wallet passes with a custom backend for distributing and updating them, as described in the documentation (https://developer.apple.com/documentation/walletpasses). I'm sometimes seeing a behaviour where the device does not download an updated pass even though the push notification for informing about the changes has been successfully sent (I've received a success response from APNs). APNs documentation says that it should retry sending the notification if the device is not reachable, but in the cases I'm describing here, the request from the device to fetch the updated pass never arrives. I don't have the apns-expiration header set. Also, I've checked the load balancer and firewall logs, etc. and there are no traces of the requests. Any thoughts on what might be the issue here? Or how to debug this further?
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352
Dec ’24
How can I be notified when my app is in foreground and server start an live activity by push notification
My app will be woken when Activity.pushToStartTokenUpdates delivered the new token. But I want to know how can I get the activity.pushTokenUpdates when my server start an live activity via push notification, because without the activity.pushTokenUpdates, my server can't deliver update information after start the live activity. For now, I check the activities when my app switch foreground/background. But how can I be notified when my app is in foreground and server start an live activity by push notification. I've tried "content-available": 1 in LA's payload aps, but I also can't be notified in the didReceiveRemoteNotification in appDelegate.
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389
Dec ’24
Unable to install an app extension when running it for debugging
I've got an app with several app extensions (call extension, action extension, notification service extension, message filtering extension, notification content extension). If I need to interactively debug these then I can select the scheme and run the extension within Xcode for all of them except for the notification content extension, with that I get an error dialog summary saying: Failed to install the app on the device / The provided item to be installed is not of a type that CoreDevice recognizes. Which when expanded has the blumpf posted below. Why can I not run the notification content extension, when I can run any other type of app extension? Failed to install the app on the device. Domain: com.apple.dt.CoreDeviceError Code: 3002 Failure Reason: The provided item to be installed is not of a type that CoreDevice recognizes. User Info: { DVTErrorCreationDateKey = "2024-12-27 16:39:54 +0000"; IDERunOperationFailingWorker = IDEInstallCoreDeviceWorker; NSURL = "file:///Users/Me/Library/Developer/Xcode/DerivedData/XFinity-celiagrvtevxcagztrguseawvjkl/Build/Products/Debug.Ceq.QA-iphoneos/NotificationContentExtension.appex"; } -- Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : { "device_identifier" = "00008101-00115D623460001E"; "device_isCoreDevice" = 1; "device_model" = "iPhone13,3"; "device_osBuild" = "18.2 (22C152)"; "device_platform" = "com.apple.platform.iphoneos"; "device_thinningType" = "iPhone13,3"; "dvt_coredevice_version" = "397.28"; "dvt_coresimulator_version" = "993.7"; "dvt_mobiledevice_version" = "1759.40.2.100.1"; "launchSession_schemeCommand" = Run; "launchSession_state" = 1; "launchSession_targetArch" = arm64; "operation_duration_ms" = 7; "operation_errorCode" = 3002; "operation_errorDomain" = "com.apple.dt.CoreDeviceError"; "operation_errorWorker" = IDEInstallCoreDeviceWorker; "operation_name" = IDERunOperationWorkerGroup; "param_debugger_attachToExtensions" = 0; "param_debugger_attachToXPC" = 1; "param_debugger_type" = 1; "param_destination_isProxy" = 0; "param_destination_platform" = "com.apple.platform.iphoneos"; "param_diag_113575882_enable" = 0; "param_diag_MainThreadChecker_stopOnIssue" = 0; "param_diag_MallocStackLogging_enableDuringAttach" = 0; "param_diag_MallocStackLogging_enableForXPC" = 1; "param_diag_allowLocationSimulation" = 0; "param_diag_checker_tpc_enable" = 1; "param_diag_gpu_frameCapture_enable" = 0; "param_diag_gpu_shaderValidation_enable" = 0; "param_diag_gpu_validation_enable" = 0; "param_diag_guardMalloc_enable" = 0; "param_diag_memoryGraphOnResourceException" = 0; "param_diag_mtc_enable" = 0; "param_diag_queueDebugging_enable" = 1; "param_diag_runtimeProfile_generate" = 0; "param_diag_sanitizer_asan_enable" = 0; "param_diag_sanitizer_tsan_enable" = 0; "param_diag_sanitizer_tsan_stopOnIssue" = 0; "param_diag_sanitizer_ubsan_enable" = 0; "param_diag_sanitizer_ubsan_stopOnIssue" = 0; "param_diag_showNonLocalizedStrings" = 0; "param_diag_viewDebugging_enabled" = 1; "param_diag_viewDebugging_insertDylibOnLaunch" = 1; "param_install_style" = 2; "param_launcher_UID" = 2; "param_launcher_allowDeviceSensorReplayData" = 0; "param_launcher_kind" = 0; "param_launcher_style" = 0; "param_launcher_substyle" = 2; "param_runnable_appExtensionHostRunMode" = 0; "param_runnable_productType" = "com.apple.product-type.app-extension"; "param_structuredConsoleMode" = 1; "param_testing_launchedForTesting" = 0; "param_testing_suppressSimulatorApp" = 0; "param_testing_usingCLI" = 0; "sdk_canonicalName" = "iphoneos18.2"; "sdk_osVersion" = "18.2"; "sdk_variant" = iphoneos; } -- System Information macOS Version 14.7 (Build 23H124) Xcode 16.2 (23507) (Build 16C5032a) Timestamp: 2024-12-27T08:39:54-08:00
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707
Dec ’24
Live Activities - Missing Entitlement
I've built an app that supports live activities, but when trying to build and deploy I'm getting the error: Provisioning profile "iOS Team Provisioning Profile doesn't include the com.apple.developer.live-activity entitlement." Looking in Xcode - under signing and provisions, there is no "Live Activity" option to select. Looking in the developer portal, similarly under Certificates, Identifiers & Profiles, there is no "Live Activity" option. I've added com.apple.developer.live-activity to my entitlements file for both my widget and my main app target, and added NSSupportsLiveActivities to my info.plist files. I'm building on Xcode Version 16.0 Any ideas on how to fix this? Super confused! Thanks in advance!
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740
Dec ’24
Rewrite `UNNotificationServiceExtension` sub class into Swift 6 async await notation
I'm trying to rewrite a Swift code to Swift 6 language mode and am stuck with this problem. How do I safely pass the bestAttemptContent and contentHandler to the Task? This is from the UNNotificationServiceExtension subclass. final class NotificationService: UNNotificationServiceExtension { var contentHandler: ((UNNotificationContent) -> Void)? var bestAttemptContent: UNMutableNotificationContent? var customNotificationTask: Task<Void, Error>? override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) { self.contentHandler = contentHandler bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent) guard let bestAttemptContent = bestAttemptContent else { invokeContentHandler(with: request.content) return } do { let notificationModel = try PushNotificationUserInfo(data: request.content.userInfo) guard let templatedImageUrl = notificationModel.templatedImageUrlString, let imageUrl = imageUrl(from: templatedImageUrl) else { invokeContentHandler(with: bestAttemptContent) return } setupCustomNotificationTask( imageUrl: imageUrl, bestAttemptContent: bestAttemptContent, contentHandler: contentHandler ) } catch { invokeContentHandler(with: bestAttemptContent) } } // More code private func downloadImageTask( imageUrl: URL, bestAttemptContent: UNMutableNotificationContent, contentHandler: @escaping (UNNotificationContent) -> Void ) { self.customNotificationTask = Task { let (location, _) = try await URLSession.shared.download(from: imageUrl) let desiredLocation = URL(fileURLWithPath: "\(location.path)\(imageUrl.lastPathComponent)") try FileManager.default.moveItem(at: location, to: desiredLocation) let attachment = try UNNotificationAttachment(identifier: imageUrl.absoluteString, url: desiredLocation, options: nil) bestAttemptContent.attachments = [attachment] contentHandler(bestAttemptContent) } } } I tried using the MainActor.run {}, but it just moved the error to that run function. The UNNotificationRequest is not sendable, and I don't think I can make it so. Wrap the setupCustomNotification in a Task will move the errors to the didReceive method. It seems like the consuming keyword will help here, but it leads to a compilation error, even with the latest Xcode (16.2). Any pointers?
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1
436
Jan ’25